Abstract
Steel beams can be strengthened in flexure using bonded FRP strengthening. This method relies critically upon the bonding adhesive. A typical two-part ambient cure epoxy adhesive used for strengthening work has a glass transition temperature between about 50ºC and 80ºC, and the stiffness and strength of the adhesive decrease at temperatures somewhat below the glass transition. This paper uses tests on steel beams strengthened with carbon fibre-reinforced polymer (CFRP) plates and ambient-cure epoxy adhesive to demonstrate that slip occur across the adhesive joint as the beams are warmed up. The consequences of this deformation are investigated by comparison with an analytical model of the joint's behaviour that takes into account the change in adhesive properties with temperature.
| Original language | English |
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| Title of host publication | Structural Faults and Repair 2010 |
| Place of Publication | Edinburgh |
| Publication status | Published - 2010 |
| Event | Structural Faults and Repair 2010 - Edingburgh, United Kingdom Duration: 15 Jun 2010 → 17 Jun 2010 |
Conference
| Conference | Structural Faults and Repair 2010 |
|---|---|
| Country/Territory | United Kingdom |
| City | Edingburgh |
| Period | 15/06/10 → 17/06/10 |
Keywords
- Steel
- strengthening
- high temperatures
- fibre-reinforced polymer
- adhesive
- bond